| A | B |
|---|
| allele | a version of a gene |
| homozygous | having two of the same copies of an allele |
| heterozygous | having two different copies of an allele |
| hybrid | anothe term for heterozygous |
| phenotype | the physical appearance of an organism |
| genotype | the genetic make up of an organism |
| P | the parent generation |
| F1 | the first generation of offspring |
| F2 | the second generation of offspring |
| punnett square | a tool used to predict genetic crosses |
| Gregor Mendel | the father of genetics |
| genetics | the branch of biology that focuses on how traits are passed from parents to their offspring |
| heredity | the transmission of characterists from parent to offspring |
| dominant | the stronger allele, it is always expressed, represented by a capital letter. |
| recessive | the weaker allele, represented by a lowercase letter |
| probability | the chance of something happening |
| chromosomes | made of DNA, contain the genes that make each organism unique. |
| gene | a segment of DNA that controls a particular trait |
| trait | another term for characteristic |
